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OAuth 2.0 and OpenID Connect (in plain English)

OktaDev · talk · Watch on YouTube

Security & hackingWeb development

What it is

Okta developer advocate Nate Barbettini explains OAuth 2.0 and OpenID Connect in a roughly hour-long talk. It starts from the problems the protocols solve and walks through the flows. The description notes the implicit flow material is now out of date.

Why Hacker News recommends it

HN repeatedly points people to it as the clearest way to finally understand OAuth, to the point that one team made it required viewing for new hires.

  • 7 people recommended it
  • 6 different months
  • 3 strong recommendations
  • first 2019, last 2026

What HN commenters said

  1. “It's about 1h long, but it's really worth it.”

    Nice, simple, hour-long OAuth explanation.

    sakisv, 2020-07 · Strong recommendation · in “Everything you need to know about OAuth 2.0”

  2. “This video was a huge help though for explaining all of the concepts”

    Clarified all OAuth concepts after confusing docs.

    butisaidsudo, 2023-04 · Strong recommendation · in “Why is OAuth still hard in 2023?”

  3. “it was a requirement for new joiners to watch this in their first week”

    Learn OAuth from zero.

    willsmith72, 2024-04 · Strong recommendation · in “Learn OAuth by building a client with Node.js”

  4. “Also this video is a great in-depth walkthrough”

    In-depth walkthrough of OAuth and OpenID Connect.

    manigandham, 2019-10 · Recommendation · in “An Illustrated Guide to OAuth and OpenID Connect”

  5. “Listed among free OAuth/OIDC learning resources.”

    krantic, 2023-11 · Recommendation · in “Ask HN: Any comprehensive courses on Auth?”

  6. “I found Nate Barbettini's video on OAuth and OpenID Connect incredibly insightful for understanding these topics.”

    Insightful explanation of OAuth and OpenID Connect.

    langur, 2023-11 · Recommendation · in “Ask HN: Any comprehensive courses on Auth?”

  7. “A classic explainer from almost a decade ago.”

    Explains OAuth from the original problem it solved.

    scandox, 2026-02 · Recommendation · in “What Is OAuth?”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: oauth 2.0, openid connect, authentication, authorization, web security

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